Answer:38
Step-by-step explanation:
Answer:B
Step-by-step explanation:
Answer:
the and is x>-7
Step-by-step explanation:
collect like time
-2x<10+4
-2x<14
x>14/-2
x>-7
Answer:
-sqrt(3)/2
Step-by-step explanation:
Use double angle identity for sin(2x)
sin(2x)=2sin(x)cos(x)
We are given sin(x)=-1/2 so we already have so far that:
sin(2x)=2(-1/2)cos(x)
sin(2x)=-1*cos(x)
We just need to find cos(x).
x is in the fourth quadrant so cosine will be positive there
knowing the unit circle we should know that if sin(x)=-1/2 then cos(x)=sqrt(3)/2 while in 4th quadrant.
So the answer is sin(2x)=-1*sqrt(3)/2=-sqrt(3)/2
It is quite simple answer is this
1. 5
2. -6+4
3.13
